﻿
#include <iostream>
#include <string>
using namespace std;
int main()
{
    string str = "flag:{VEg46T4m03a0170d16b045045f7c3a040a43c103a}";
    string::iterator it_s;
    it_s = str.begin() + 15;
    cout << *it_s << endl;
    for (it_s; it_s != str.end() - 1; ++it_s)
    {
        *it_s ^= 0x7;
    }
    cout << str << endl;
}

